Oh my. Razer debuted a triple display (gaming) laptop at CES this week. Sadly, it's only a concept and catered toward gaming. They do have a shot on the project page of it being used for video editing though.

I was checking out the specs. It's amazing how they've kept the thickness down-1.5". And perhaps more amazing, they're pushing those three 4k displays with a single Nvidia GTX 1080. Things weighs 12lbs though!